U.S. Rep. Mike Coffman is in the battle of his political career this November where every vote matters but one vote he won’t receive — at least as of now — comes from one of his staunchest allies: his wife Cynthia Coffman.

Cynthia Coffman has been a registered voter in Denver since 2011. In 2012, she didn’t cast a vote for her husband, who won re-election to his competitive seat that year by about 2 percentage points.

So why not register in the competitive 6th District?

“Cynthia and Mike owned their own homes before they were married,” said Sarah Lenti, a spokeswoman for the attorney general campaign. “Mike works in Washington, D.C., but for the weekends, and Cynthia lives and works in Denver as chief deputy attorney general.”

Lenti added that Cynthia Coffman lives in the home “closest to her work.”

Rep. Coffman is vying for a fourth-term in the 6th District and is being challenged by Democrat Andrew Romnanoff, a former Colorado House speaker.

His campaign did not respond to requests for comment about his wife’s voter registration.

Lynn Bartels thinks politics is like sports but without the big salaries and protective cups. The Washington Post's "The Fix" blog has named her one of Colorado's best political reporters and tweeters.

Joey Bunch has been a reporter for 28 years, including the last 12 at The Denver Post. For various newspapers he has covered the environment, water issues, politics, civil rights, sports and the casino industry.